Black garlic has a high nutritional value, contains a variety of essential amino acids and dietary fiber, and can effectively enhance human immunity. Eating some black garlic in moderation can combine dietary fiber with cholesterol metabolites in the stomach, thus promoting intestinal peristalsis and achieving the purpose of losing weight. Black garlic also has a certain bactericidal and insecticidal effect, and can be directly applied to the skin surface, which has a certain effect on preventing beriberi and Liriodendron chinense. The content of vitamin B in black garlic is relatively high, which can effectively nourish nerves and prevent some memory loss and dementia.